php中文字符入库或显示乱码问题的解决方法

<?php
/*
filename:query.php
do:getandshowthedata
author:www.5dkx.com
*/
include_once("conn.php");
include_once("include.php");
mysql_query("setnames"gbk"")ordie("设置字符库失败\n");
mysql_select_db($db)ordie("连接数据库失败!\n");
$exec="select*from$table";
//echo$exec;
$result=mysql_query($exec,$conn)ordie("查询数据库失败\n");
echo"<tableborder=2>";
for($cout=0;$cout<mysql_numrows($result);$cout++)
{
$city=mysql_result($result,$cout,city);
$name=mysql_result($result,$cout,name);
$phone=mysql_result($result,$cout,phone);
echo"<tr>";
echo"city:$city";
echo"name:$name";
echo"phone:$phone";
echo"</tr>";
}
echo"</table>";
?>